This is a small, cost-effective band pass filter with Bias Tee centered at 1575.42 MHz with a typical insertion loss of 3.5 dB in the pass band. An optional voltage supply can be provided using either a micro USB (cellphone) cable or DC header (+4V to +10V) to power an active antenna with +3.3V. Refer to the block diagram in the product photos.
Use this product if your GPS module doesn't have a built in bias tee to power an active antenna.
Alternatively the device can be used as a bandpass filter without the supply.
This filter has excellent rejection specifications. Rejection at 850 MHz and 1615 MHz for instance, is greater than 40 dB. The filter also provides power handling of up to a maximum +10 dBm and has an operating temperature range of -40C to +85C.
- GPS L1 signal reception using an active antenna
- Rejection of strong signals in Cellular, LTE, UHF and 915 MHz, 2.4 GHz ISM bands
- In the Lab or out in the Field
1575 + 7.5 MHz
Frequency Typical Attenuation
850 MHz 45 dB
1500 MHz 30 dB
1535 MHz 30 dB
1615 MHz 45 dB
1640 MHz 45 dB
1700 MHz 50 dB
The filter uses SMA-F PCB edge mount connectors.
Maximum DC voltage on input or output: +25V
Maximum RF input signal Level: +10 dBm
Maximum DC voltage on header: +10V